Whirlwind milling cutter blade, whirlwind milling cutter seat assembly and whirlwind milling cutter disc assembly

Abstract

This utility model belongs to the field of milling technology, and provides a cyclone milling insert. The cyclone milling insert has a first top surface and a first bottom surface arranged opposite each other along the thickness direction, and also has a first side surface and a second side surface for positioning; wherein the included angle between the first side surface and the second side surface is an acute angle α, and the included angle between the first bottom surface and the second side surface is an acute angle b. A cyclone milling cutter holder assembly is also provided, which can cooperate with the aforementioned cyclone milling insert. A cyclone milling cutter disc assembly is also provided, including the aforementioned cyclone milling cutter holder assembly. The cyclone milling insert, cyclone milling cutter holder assembly, and cyclone milling cutter disc assembly provided by the embodiments of this utility model have the advantages of good insert rigidity and good machining accuracy during milling.

Description

Technical Field

[0001] This utility model belongs to the field of milling technology, and in particular relates to a cyclone milling cutter insert, a cyclone milling cutter holder assembly, and a cyclone milling cutter disc assembly. Background Technology

[0002] Cyclone milling is a high-efficiency, high-precision thread and screw machining process. During cyclone milling, the milling resistance experienced by the cyclone milling cutter insert is a force along the tip direction (backward and downward), which is transmitted through the insert to the contact area between the insert and the tool holder. Existing technologies generally use triangular cyclone milling cutters directly mounted on the cutter head or mounted on the cutter head via a tool holder, such as the cyclone milling cutter disclosed in CN203409376U. In this case, the insert and tool holder only have a horizontal positioning relationship, failing to consider the downward milling resistance experienced by the insert. This results in poor insert rigidity and vertical vibration, thus reducing the machining accuracy of the milling system. Therefore, there is an urgent need to design a cyclone milling cutter insert mounting structure to improve the machining accuracy of cyclone milling. Utility Model Content

[0003] To overcome the problems existing in the related technologies, this application provides a cyclone milling cutter insert, a cyclone milling cutter holder assembly, and a cyclone milling cutter disc assembly.

[0004] According to a first aspect of the embodiments of this application, a cyclone milling cutter is provided, the cyclone milling cutter having a first top surface and a first bottom surface disposed opposite to each other along the thickness direction, and also having a first side surface and a second side surface for positioning;

[0005] The angle between the first side surface and the second side surface is acute angle a, and the angle between the first bottom surface and the second side surface is acute angle b.

[0006] In some embodiments, both the first side surface and the second side surface are located between the first top surface and the first bottom surface;

[0007] The first side and the second side intersect or have intersecting extended surfaces to form the acute angle a; the first bottom surface and the second side intersect or have intersecting extended surfaces to form the acute angle b.

[0008] In some implementations, the first bottom surface is perpendicular to the first side surface.

[0009] In some embodiments, the first top surface is provided with a first connecting hole extending to the first bottom surface.

[0010] In some implementations, the acute angle a is greater than or less than the acute angle b.

[0011] In some embodiments, the cyclone milling cutter further has a third side and a fourth side located between the first side and the second side, the third side being disposed opposite to the first side, the fourth side being disposed opposite to the second side, and a cutting edge being disposed between the third side and the fourth side.

[0012] According to a second aspect of the present application, a cyclone milling cutter holder assembly is provided, including a cutter holder and a cyclone milling cutter insert as described in any of the preceding claims. The cutter holder is provided with a mounting groove, the mounting groove having a second bottom surface, a fifth side surface, and a sixth side surface. The cyclone milling cutter insert is fixedly installed in the mounting groove, the second bottom surface abutting against the first bottom surface, and the fifth side surface and the sixth side surface abutting against the first side surface and the second side surface, respectively.

[0013] In some embodiments, the second bottom surface is provided with a second connecting hole corresponding to the first connecting hole, and fasteners for locking the cyclone milling cutter into the mounting groove are connected in the first connecting hole and the second connecting hole.

[0014] In some implementations, the fifth and sixth sides are respectively interference-fitted with the first and second sides.

[0015] According to a second aspect of the present application, a cyclone milling cutter head assembly is provided, including a cutter head and a cyclone milling cutter holder assembly as described in any of the preceding claims. At least two cutter holder grooves are evenly distributed around the circumference of the cutter head, and one cyclone milling cutter holder assembly is installed in each of the cutter holder grooves.

[0016] The whirl milling insert provided by this utility model has an acute angle α between the first and second side surfaces and an acute angle b between the first bottom surface and the second side surface. During operation, the force exerted by the tool holder on the second side surface will simultaneously compress the whirl milling insert towards both the first bottom surface and the first side surface. This allows the whirl milling insert to fit more tightly with the tool holder, resulting in good rigidity of the whirl milling insert and preventing vertical vibration, thereby improving the machining accuracy of the milling system. Therefore, the whirl milling insert provided by this utility model has the advantages of good insert rigidity and good machining accuracy during milling.

[0017] The cyclone milling cutter holder assembly provided by this utility model, since it can cooperate with the aforementioned cyclone milling cutter inserts, has the beneficial effects of the aforementioned cyclone milling cutter inserts, which will not be described in detail here. The cyclone milling cutter disc assembly provided by this utility model, since it includes the aforementioned cyclone milling cutter holder assembly, has the beneficial effects of the aforementioned cyclone milling cutter holder assembly, which will not be described in detail here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the main structure of a cyclone milling cutter provided in a specific embodiment of the present invention.

[0020] Figure 2 This is a top view of a cyclone milling cutter provided in a specific embodiment of the present invention.

[0021] Figure 3 This is a left-side view of a cyclone milling cutter provided in a specific embodiment of the present invention.

[0022] Figure 4 This is a three-dimensional structural diagram of a cyclone milling cutter holder assembly provided in a specific embodiment of the present utility model.

[0023] Figure 5 This is a front view structural diagram of a tool holder provided in a specific embodiment of the present invention.

[0024] Figure 6 This is a top view of the tool holder provided in a specific embodiment of the present invention.

[0025] The following labels are shown in the attached diagram:

[0026] 100. Cyclone milling cutter; 101. First top surface; 102. First bottom surface; 103. First side surface; 104. Second side surface; 105. First connecting hole; 106. Third side surface; 107. Fourth side surface; 200. Tool holder; 201. Mounting slot; 2011. Second bottom surface; 2012. Fifth side surface; 2013. Sixth side surface; 2014. Second connecting hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please refer to Figures 1 to 6 , Figure 1This is a schematic diagram of the main structure of a cyclone milling cutter provided in a specific embodiment of the present invention. Figure 2 This is a top view of a cyclone milling cutter provided in a specific embodiment of the present invention. Figure 3 This is a left-side structural schematic diagram of a cyclone milling cutter provided in a specific embodiment of the present invention; Figure 4 This is a three-dimensional structural diagram of a cyclone milling cutter holder assembly provided in a specific embodiment of the present utility model; Figure 5 This is a front view structural diagram of a tool holder provided in a specific embodiment of the present utility model; Figure 6 This is a top view of the tool holder provided in a specific embodiment of the present invention.

[0029] A first aspect of this utility model provides a cyclone milling cutter 100, which has a first top surface 101 and a first bottom surface 102 disposed opposite to each other along the thickness direction, and also has a first side surface 103 and a second side surface 104 for positioning. The included angle between the first side surface 103 and the second side surface 104 is an acute angle α, and the included angle between the first bottom surface 102 and the second side surface 104 is an acute angle b.

[0030] During cyclone milling, the milling resistance experienced by the cyclone milling insert 100 is a backward and downward force along the tip direction. When this milling resistance is transmitted through the cyclone milling insert 100 to the tool holder 200 that mates with it, the angle between the first side surface 103 and the second side surface 104 of the cyclone milling insert 100 is an acute angle α. Therefore, the backward force exerted by the tool holder 200 on the second side surface 104 of the cyclone milling insert 100 will react back onto the first side surface 103, causing the tool holder 200 to exert a forward force on the first side surface 103. Furthermore, the first bottom surface 10 of the cyclone milling insert 100... 2. The included angle between the second side 104 and the second side 104 is an acute angle b. The downward force exerted by the tool holder 200 on the second side 104 of the whirl milling cutter 100 will react on the first bottom surface 102, so that the tool holder 200 exerts an upward force on the first bottom surface 102. That is, during operation, the force exerted by the tool holder 200 on the second side 104 will simultaneously press the whirl milling cutter 100 against the first bottom surface 102 and the first side 103, so that the whirl milling cutter 100 can fit more tightly with the tool holder 200, thereby making the whirl milling cutter 100 more rigid and avoiding vertical vibration, thus making the milling system more accurate.

[0031] Therefore, the cyclone milling cutter 100 provided in this embodiment of the present invention has the advantages of good cutter rigidity and good machining accuracy during milling.

[0032] In some embodiments, the first side surface 103 and the second side surface 104 are both located between the first top surface 101 and the first bottom surface 102. The first side surface 103 and the second side surface 104 intersect or have intersecting extension surfaces to form an acute angle α; the first bottom surface 102 and the second side surface 104 intersect or have intersecting extension surfaces to form an acute angle β. The two positioning surfaces, the first side surface 103 and the second side surface 104, are located between the first bottom surface 102 and the first top surface 101, which can ensure the overall positioning effect of the whirl milling cutter 100 during positioning. At the same time, the first side surface 103 and the second side surface 104 are two adjacent surfaces. By positioning the two adjacent surfaces, the overall positioning effect of the whirl milling cutter 100 is further guaranteed.

[0033] In some embodiments, the first bottom surface 102 is perpendicular to the first side surface 103. In a whirl milling cutter disclosed in CN203409376U, when a triangular insert is positioned in a triangular mounting slot within the tool holder, it needs to be positioned with all three sides of the mounting slot. Positioning accuracy is difficult to guarantee, and positioning errors can affect the radial positioning accuracy of the insert. Furthermore, the side surface of the triangular insert provides very little support, resulting in minimal positioning support in practical use. In this embodiment, since the first bottom surface 102 is perpendicular to the first side surface 103, it is easier for the first bottom surface 102 and the first side surface 103 of the whirl milling insert 100 to first engage with the tool holder 200, and then for the second side surface 104 of the whirl milling insert 100 to engage with the tool holder. This makes it easier to guarantee the overall positioning accuracy of the whirl milling insert 100, thereby improving the machining accuracy of the milling system.

[0034] Cyclone milling systems use multiple cutting tools simultaneously. The better the consistency of the rotational contours of these tools, the longer the tool life. Conventional cyclone milling insert positioning methods (e.g., the 100mm insert) cannot guarantee positioning accuracy and insert rigidity. For example, the external cyclone milling cutter mounting and fixing structure disclosed in CN205437294U has a second mounting groove at the outer end of the tool holder for fixing the inserts. This second mounting groove is V-shaped. However, when the two faces of the V-shaped protrusion on the insert itself are positioned one-to-one with the two faces of the V-shaped mounting groove, only one face of the insert's V-shaped protrusion may be positioned with one face of the V-shaped mounting groove. Therefore, after installation, different inserts on the cutter head will have an axial height difference, resulting in poor product machining accuracy, affecting the milling accuracy of the leadscrew, and reducing tool life.

[0035] In view of this, in the embodiment of this utility model, a first connecting hole 105 is provided on the first top surface 101, extending to the first bottom surface 102. That is, the first connecting hole 105 is a through hole that penetrates the thickness direction of the cyclone milling cutter 100. The cyclone milling cutter 100 can be locked onto the tool holder 200 by fasteners inserted into the first connecting hole 105. After the fasteners lock the cyclone milling cutter 100, the first bottom surface 102 of the cyclone milling cutter 100 and the mounting surface of the tool holder 200 are tightly fitted, so that the cyclone milling cutter 100 is positioned in the axial direction of the cutter head by a plane. Compared with positioning by a V-groove, the positioning accuracy of the cyclone milling cutter 100 in the axial direction of the cutter head is higher, thereby making the axial positioning of the milling system more accurate.

[0036] In some embodiments, acute angle a is smaller than acute angle b. Because the cyclone milling insert 100 experiences greater backward cutting resistance during operation, making acute angle a smaller than acute angle b allows the tool holder 200 to exert a greater forward force on the first side surface 103.

[0037] In some embodiments, acute angle a satisfies: 75° ≤ a < 90°, for example, it can be 75°, 80°, and 89°. Acute angle b satisfies: 85° ≤ b < 90°, for example, it can be 85°, 87°, and 89°. Of course, the range of values ​​for acute angle a and acute angle b includes, but is not limited to, the above ranges, and will not be detailed here. By setting appropriate degrees for acute angle a and acute angle b, the whirlwind milling cutter 100 and the tool holder 200 that cooperates with the whirlwind milling cutter 100 can have a certain strength while ensuring the rigidity of the whirlwind milling cutter 100 during operation.

[0038] In some embodiments, the whirl milling cutter 100 further has a third side 106 and a fourth side 107 located between the first side 103 and the second side 104. The third side 106 is disposed opposite to the first side 103, and the fourth side 107 is disposed opposite to the second side 104. A cutting edge is disposed between the third side 106 and the fourth side 107. This makes the overall shape of the whirl milling cutter 100 approximately square and a single-edged milling cutter, thus making the whirl milling cutter 100 provided in this embodiment simple in structure, customizable in tip shape, and with better strength and rigidity.

[0039] It is understandable that there may also be a small connecting side or chamfer between the first side 103 and the second side 104 of the cyclone milling cutter 100 in order to avoid sharp corners around the periphery of the cyclone milling cutter 100.

[0040] A second aspect of this utility model provides a cyclone milling cutter holder assembly, which includes a cutter holder 200 and a cyclone milling cutter insert 100 as described above. A mounting groove 201 is provided at one upper corner of the cutter holder 200. The mounting groove 201 has a second bottom surface 2011, a fifth side surface 2012, and a sixth side surface 2013. The cyclone milling cutter insert 100 is fixedly installed in the mounting groove 201. The second bottom surface 2011 is in close contact with the first bottom surface, and the fifth side surface 2012 and the sixth side surface 2013 are in close contact with the first side surface 103 and the second side surface 104, respectively.

[0041] The whirl milling cutter 100 is mounted on the upper corner of the tool holder 200, allowing the mounting groove 201 to have only a second bottom surface 2011, a fifth side surface 2012, and a sixth side surface 2013, thus facilitating machining of the mounting groove 201 on the tool holder 200. Since the second bottom surface 2011 abuts against the first bottom surface 102, and the fifth side surface 2012 and sixth side surface 2013 correspond one-to-one with the first side surface 103 and the second side surface 104, and the included angle between the sixth side surface 2013 and the fifth side surface 2012 of the tool holder 200 is also an acute angle α, and the included angle between the second bottom surface 2011 and the sixth side surface 2013 is also an acute angle β, the whirl milling cutter 100 and the second bottom surface 2011, fifth side surface 2012, and sixth side surface 2013 within the mounting groove 201 can fit tightly, resulting in good rigidity of the whirl milling cutter 100 and, consequently, good machining accuracy of the milling system.

[0042] In some embodiments, the second bottom surface 2011 is provided with a second connecting hole 2014 corresponding to the first connecting hole 105. Fasteners for locking the cyclone milling cutter 100 into the mounting groove 201 are connected in the first connecting hole 105 and the second connecting hole 2014. Using fasteners to lock the cyclone milling cutter 100 into the mounting groove 201 of the tool holder 200 facilitates the replacement of cyclone milling cutters 100 of different specifications as needed, improving operational flexibility.

[0043] In some embodiments, the fifth side 2012 and the sixth side 2013 are respectively fitted with the first side 103 and the second side 104 in an interference fit. This arrangement allows the cyclone milling cutter 100 to be pulled tighter on the tool holder 200, thereby enabling the cyclone milling cutter 100 to fit more closely with the positioning surface on the tool holder 200, and thus making the cyclone milling cutter 100 more rigid.

[0044] Specifically, such as Figure 1 and Figure 5As shown, the axis of the first connecting hole 105 is perpendicular to the first bottom surface 102. The distance from the axis of the first connecting hole 105 to the first side surface 103 is m1, and the furthest distance from the axis of the first connecting hole 105 to the second side surface 104 is n1. The distance from the axis of the second connecting hole 2014 to the fifth side surface 2012 is m2, and the furthest distance from the axis of the second connecting hole 2014 to the sixth side surface 2013 is n2, where m1 > m2 and n1 > n2. This ensures that when the fastener passes through the first connecting hole 105 and the second connecting hole 2014 to lock the whirl milling cutter 100 onto the tool holder 200, the whirl milling cutter 100 and the tool holder 200 are in an interference fit. Preferably, m1 = n1 and m2 = n2, so that the first side surface 103 and the second side surface 104 of the whirl milling cutter 100 are tightened to a similar degree, and the force on the two sides of the whirl milling cutter 100 is relatively uniform.

[0045] A third aspect of this utility model provides a cyclone milling cutter head assembly (not shown in the drawings). The cyclone milling cutter head assembly includes a cutter head and a cyclone milling cutter holder assembly described above. At least two cutter holder grooves are evenly distributed around the circumference of the cutter head, and a cyclone milling cutter holder assembly is installed in each cutter holder groove.

[0046] The cyclone milling cutter assembly of this embodiment has the beneficial effects of the aforementioned cyclone milling cutter holder assembly, which will not be repeated here.

[0047] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0048] The mechanism provided by this utility model has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, this utility model is not limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cyclone milling cutter (100), characterized in that, The cyclone milling cutter (100) has a first top surface (101) and a first bottom surface (102) arranged opposite to each other in the thickness direction, and also has a first side surface (103) and a second side surface (104) for positioning. The included angle between the first side surface (103) and the second side surface (104) is acute angle a, and the included angle between the first bottom surface (102) and the second side surface (104) is acute angle b.

2. The cyclone milling cutter (100) according to claim 1, characterized in that, The first side surface (103) and the second side surface (104) are both located between the first top surface (101) and the first bottom surface (102); The first side surface (103) and the second side surface (104) intersect or have intersecting extended surfaces to form the acute angle a; the first bottom surface (102) and the second side surface (104) intersect or have intersecting extended surfaces to form the acute angle b.

3. The cyclone milling cutter (100) according to claim 1, characterized in that, The first bottom surface (102) is perpendicular to the first side surface (103).

4. The cyclone milling cutter (100) according to claim 1, characterized in that, The first top surface (101) is provided with a first connecting hole (105) that extends through to the first bottom surface (102).

5. The cyclone milling cutter (100) according to claim 1, characterized in that, The acute angle a is greater than or less than the acute angle b.

6. The cyclone milling cutter (100) according to claim 1, characterized in that, The cyclone milling cutter (100) also has a third side (106) and a fourth side (107) located between the first side (103) and the second side (104), the third side (106) being disposed opposite to the first side (103), the fourth side (107) being disposed opposite to the second side (104), and a cutting edge being disposed between the third side (106) and the fourth side (107).

7. A cyclone milling cutter holder assembly, characterized in that, The invention includes a tool holder (200) and a whirl milling cutter (100) according to any one of claims 1-6. The tool holder (200) is provided with a mounting groove (201). The mounting groove (201) has a second bottom surface (2011), a fifth side surface (2012), and a sixth side surface (2013). The whirl milling cutter (100) is fixedly installed in the mounting groove (201). The second bottom surface (2011) is in contact with the first bottom surface (102). The fifth side surface (2012) and the sixth side surface (2013) are in contact with the first side surface (103) and the second side surface (104) respectively.

8. The cyclone milling cutter holder assembly according to claim 7, characterized in that, The second bottom surface (2011) is provided with a second connecting hole (2014) corresponding to the first connecting hole (105). Fasteners for locking the cyclone milling cutter (100) into the mounting groove (201) are connected in the first connecting hole (105) and the second connecting hole (2014).

9. The cyclone milling cutter holder assembly according to claim 7, characterized in that, The fifth side (2012) and the sixth side (2013) are respectively interference fit with the first side (103) and the second side (104).

10. A cyclone milling cutter head assembly, characterized in that, The invention includes a cutter head and a cyclone milling cutter holder assembly as described in any one of claims 7-9, wherein at least two cutter holder grooves are evenly distributed around the circumference of the cutter head, and one cyclone milling cutter holder assembly is installed in each of the cutter holder grooves.

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